MH>RW> Did you keep the old radiator? It would be interesting to know what that
MH>RW> internal trans-cooler line is made of. Plastic, like the end caps or
MH>RW> brass/copper lines?

MH>No, I didn't ask for the old radiator.  It would have been interesting to kn
MH>how it broke internally.  I didn't realize that the trans-cooler could fail
MH>a way that would allow the fluids to mix.

Was that by any chance a Aluminum Radiator??
That was a rere failure and it sounds line there was severe aluminum
corrosion going on inside the radiator.
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 þ SLMR 2.1a þ Typo Tom strikes agaoin